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December 2006

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Subject:
Re: 58Bi/42Sn
From:
"P. Langeveld" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, P. Langeveld
Date:
Tue, 12 Dec 2006 11:39:39 +0100
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Another aspect on the use of Bismuth:
Bismuth is a 3% by-product from lead-mining.

Peer Langeveld
Consultant Soft Soldering Processes.




2006/12/11, Kerry McMullen <[log in to unmask]>:
> Hello esteemed Technet,
>      I am looking comments on what you would consider the advantages and
> disadvantages of this composition of this solder paste. (58Bi/42Sn)
> Lower MP.  138 Degrees C.
> Lower fatigue resistance
> Wetting to ImAg??
> Wetting to ImNiAu??
> No Clean?  Residue?
> Intermetallic Formation?
> Mixing with 63/37Sn?
> Our application is an RF board where we would use this paste post Wave /
> Hand Solder.
> Any comments appreciated.
>
> Cheers,
> Kerry
>
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